Loom



Feb. 2, 1932. L. A. DECON-ING 1,843,506

LOOM

Filed July 7, 1930 2 Sheets-Sheet l SHAWN/{$01 Louis fl- Becoming Feh 2, 1932.

L. A DECONING 1,843,506

LOOM 2 Sheets-Sheet 2 Filed July '7, 1930 LOZZZIS 10860111210.

Patented Feb. 2, 1932 1 LOUIS nnconrne, or WoonsQoKET, RHODE ISLAND Looiyr Application filed July 7, 1930. SerialfNo. 466,263.

ing the mechanism out of time and the shutting down of the machine for repairs and replacements in the event of the chain becoming jammed in the head motion.

In looms of the type aforesaid, the chain cylinder shaft has the power transmitting gear wheel fast thereto, hence, when the chain jams the chain cylinder continues to rotate with the result that more or less serious damage results and the chain and loom are thrown out of time and replacements made necessary, thus necessitating the shutting down of the loom for a period of hours in addition to the expense entailed by labor and replacements.

The invention contemplates mounting the gear wheel loosely on the chain cylinder shaft and connecting it thereto by a slipping clutch whereby in the event of the pattern or shuttle box chain jamming, the gear wheel may continue to rotate without imparting any movement to the chain cylinder, thereby preventing undue strain, breakage of parts, or the throwing of the chain or loom out of time. In consequence, the ditficulty can be remedied in a, few minutes and the chain or loom will not be thrown out of time, or the gear or shaft become broken.

While the drawings illustrate a preferred embodiment of the invention, it is to be understood that in adapting the means to meet specific needs and requirements, the design may be varied and changes in the minor details of construction may be resorted to within the scope of the invention as claimed, without departing from the spirit thereof.

For a full understanding of the invention and the merits thereof, reference is to be had to the following description and the drawings hereto attached, in which:

Figure 1 is a front view of a portion of the head motion of aloom, illustrating an embodiment of the invention.

Figure 2 is an enlarged detail sectional view on the line 2-2 of Figure 1, looking to the left as designated by the arrows.

Figure 3 is a detail sectional view on the line 3-3 of Figure 2.

Figure 4; is an end View of the shaft extension, clutch, member, and parts associated therewithe c Figure 5 is a detail View in elevation, of

the hub portion of the gear wheel loosely mounted upon the extension fitted. to the chain cylinder shaft.

Figure 6 is an end view of the clutch 1nember.

Figure 7 is a side view of the chain cylin der shaft extension.

Figure 8 is a side view of the abutment for the clutch spring.

Correspondingand likeparts are referred toin the following description and designated in the several views of the drawings by like reference characters.

The, numeral 1 designates part of the loom framev and 2 the hand wheel for controlling the pick-out motion. The numeral 3 designates an extension of the chain cylinder shaft to which they gear wheel 4 is usually keyed or: made fast but which in accordance with the present invention, is loose and adapted to be coupledto said shaft by means to prevent in- I jury or strain. to the working parts in the event of the pattern or shuttle box chain jamming.

In accordance with the present invention, an extension issecured to the projecting end 3 of the chain cylinder shaft and comprises an enlarged circular portion 5, a square portion 6, and a reduced end portion 7 in which is formed a, transverse opening 8. A flange 9 at the inner end of the shaft extension forms a stop for the gear, wheel 4 which is loosely mounted upon the part 5. The shaft xtension fits snugly upon the projecting end 3 of} the chain cylinder shaft and is secured thereto by means'of a screw 10.

The clutch member forming coupling means between the gear wheel 4e and shaft extension, comprises a head 11 and tube 12. A square opening 13 is formed in the head 11 to snugly receive the square portion 6 of' the shaft; extension, wherebythe clutch member and shaft extension and chain cylinder shaft are adapted; to rotate when coupled to the gear wheel 4. The clutch member is free to movelongitudinally onthe square portion 6 head 11 and of the shaft extension to engage and clear the gear wheel 4 in the operation of the loom. Cogs 14 project outwardly from the head 11 and are of tapering formation. Tapering 5 recesses are formed in the outer side of the hub portion of the gear wheel to receive the cogs 14 whereby, under normal condi tions, the gear wheel 4 and chain cylinder rotate but upon jamming of the pattern or. shuttle box chain, adm1t of a contlnued rotation of the gear wheel 4 and a riding of the cogs 14 into and out of the recesses 15 with the result that no motion is imparted to the chain cylinder, thereby preventing damage or straining of the loom.

An open helical spring 16 surrounds the shaftextension and is disposed within the tubular portion 12 of the clutch member. The inner end of the spring 16 engages the outer or gas an abutment located within the outer end of the tube 12 and secured to the reduced portion 7 of the shaft extension by means of a pin 17 which is passed through the opening 8. T he abutment for the outer end of the spring 16 comprises an enlarged portion 18 and a reduced portion 19, the latter entering the spring which engages the part 18. The outer side of the abutment is recessed, as indicated most clearly in Figure 2 of the drawings, to receive the pin 17 which is retained in place by the outer wall of the recess. The spring 16 is normally under tension and exerts an inward pressure upon the clutch member hold the cogs 14 5 seated in the recesses 15 under normal conditions. When the pattern or shuttle box chain jams, the abnormal resistance created causes tne cogs 14 to ride out of engagement with the recesses 15 and, in consequence, the gear 9 wheel 4 will continue to rotate without imparting any corresponding rotary movement to the chain cylinder.

It is observed that the invention is of a nature to admit of its ready application to a 5 loom or its disengagement therefrom for any purpose. The outer end of the screw 10 does not project beyond the shaft extension to interfere with slipping the clutch member thereon or removing it therefrom.

0 What is claimed is:

1. in a loom, an attachment to be applied to the projecting end of the chain cylinder shaft comprising a shaft extension, means whereby the extension may be secured around 5 the end of the shaft and project axially therefrom, a gear wheel loose upon an end portion of said extension, a clutch member on said extension and comprising a head and a tube, said head being rotatable with the extension 0 and slidable thereon into and out of engage ment with the gear wheel, an open helical spring disposed around the extension and housed within the tube, an abutment for the spring mounted upon the end of the extension remote from the gear wheel and recessed in its outer side, and a pin connecting the abutment to the extension and retained in place by fitting within the recess formed in the outer side of said abutment.

2. An attachment for the chain cylinder shaft of a loom, the same comprising a shaft extension flanged at one end and having the portion adjacent the flange of circular outline, the intermediate portion square, and the opposite end portion reduced, a gear wheel loose upon the circular portion of the extension, a clutch member comprising a head and tube, said head having a square opening to snugly receive the intermediate square portion of the extension, an open coil spring wit iin the tube of the clutch member, an abutment for the same mounted upon the re duced end of the extension and having a recess in its outer side, and a pin connecting said abutment to the extension and retained in place by fitting within the outer recessed side of the abutment. I

In testimony whereof I affix my signature.

LOUIS A. DECONING. [Le] 

